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Gender   Psychological momentum effect

Bigger number of women in financial markets could stabilize them

Female traderResearch conducted at Ben-Gurion University of the Negev (BGU) has determined that psychological momentum significantly affects performance among men but not among women, which may account for exaggerated risk-taking in financial and business endeavors among males.

Psychological momentum is defined as a state-of-mind where an individual or a team feels things are going unstoppably their way and is known to be caused, among other factors, by shifts in testosterone levels.

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The study, "Psychological Momentum and Gender," is published in the March volume of the Journal of Economic Behavior & Organization.

According to Dr. Danny Cohen-Zada, a lecturer in the BGU Department of Economics, "The purpose of our study was twofold: to estimate the causal effect of psychological momentum on performance in real tournament settings, and to examine whether there are any gender differences in the corresponding response."

The researchers analyzed two different samples of men's and women's judo competitions from 2009 to 2013. In the first, they looked at the bronze medal fights of each tournament.

While competitors in this fight won the same number of total bouts, some had won their most recent bout while others did not. Those who reached the bronze medal fight following a win have a potential momentum advantage.

The authors examined this unique setting to determine whether the contestants with the momentum advantage had a higher probability to win the fight.

"Our results showed that based on a cross-section analysis of 106 men's and 111 women's fights from eight major annual judo events, having a psychological momentum advantage significantly increases the winning probability in men's contests but not in women's," says Dr. Alex Krumer of the Swiss Institute for Empirical Economic Research (SEW), University of St. Gallen, Switzerland.

In the second part of the study, based on the head-to-head history of the pairs from the first sample and analyzing 225 men's and 231 women's fights, the researchers obtained similar results by analyzing how the performance of the same pair of judokas (judo experts) is affected by varied momentum statuses in different tournaments.

As expected, the results of these specifications indicate that the psychological momentum effect exists among men, but not among women.

The researchers believe that their findings have implications for business. "We can connect our findings to the effect of psychological momentum in financial markets of which 90 percent are men," says Dr. Ze'ev Shtudiner from the Department of Economics and Business Administration, Ariel University, Israel. Drs. Krumer and Shtudiner earned their doctoral degrees in economics from BGU.

"Such an effect may lead male traders, driven by an increase in testosterone due to a successful investment, to take exaggerated risks, which, in turn, create price bubbles," says Dr. Shtudiner.

"By increasing the number of women in financial markets, it may be possible to stabilize these markets since women have less dramatic shifts in testosterone levels, which can make them less prone to the momentum effect. This argument is consistent with our results that momentum effects are generated only among men, since it is only among them that testosterone levels increase after success."




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